Only small amounts of ATP are stored in the body's cells. ATP is hydrolyzed and converted from ATP to ADP anaerobically. The enz
yme ATPase hydrolyzes the first phosphate group from the ATP molecule when energy is needed. About seven kilocalories are released every time a phosphate bond is broken.
ATP is the energy currency of the cell that are directly used by the cell. ATP helps in the contraction of muscles, propagation of the nerve impulse and in the chemical synthesis of the molecules.
The ATPase enzyme is required for the hydrolysis of the ATP molecule. The ATPase hydrolyzes the third phosphate group and not the first phosphate group when the energy is needed. The gamma or third phosphate first removed during ATP hydrolysis.
